So a few weeks ago I finally got fed up with Vodafone's data packs. They're one of two things - too small, or far too expensive. The plans weren't at all better, since they were both too small and too expensive. Back on topic, I switched to 2degrees so I can get the 12gb mobile broadband data along with my usual prepaid text message use.
About 6-8 months ago I picked up a Samsung Series 7 slate, and a mail-in promotion for a free Omnia W. Under Vodafone I was happily using the Omnia W for (extremely conservative) browsing via Wifi net sharing.
When I switched to 2degrees, it turns out there's no automatic APN settings so I put in a custom APN, which worked fine for the phone itself to connect. However, when I try and activate Internet Sharing it says "Cellular data connection not shared." and says there is none, and I should check settings and signal. From a bit of searching on the net, I found similar issues with other WP7 devices in the states. It seems to me that unless you're using a Nokia WP7 device (apparently Nokia made an APN config utility), you can't share a non-automatic APN.
Anybody got any ideas? For now I'm using my Galaxy Tab (original), but it's not convenient at all especially with an Omnia W and a Slate 7 taking both of it's jobs.